This wild scene went down Saturday in Orlando, and it starts off right in the thick of the action. An elderly man tries storming his way into a Walmart without a face covering -- but gets stopped by an employee at the front door. That wasn't gonna stop gramps here though.

He immediately got physical and started pushing his way through -- even shoving the masked employee out of his way ... to some success, at first. The guy did get by him -- after taking a tumble during the struggle -- and then started heading for some aisles. But, this Walmart employee (of the year?) caught up to him and held his ground ... give him a raise!

On the second go, he had backup with him -- just a regular Joe, it seems -- who chimed in and told the guy to get the hell out. He also noted the dude was getting his germs all over the place by making such a big fuss -- meanwhile, almost everyone else had coverage.

It seems the two-man press was enough for the old-timer to call it quits and scram, empty-handed at that. Guess he'll have to wait to get his weekly batch of $5 DVDs ... too bad.

Anyway, the whole time you can hear the cameraman laughing it up -- and while we'll admit it's pretty funny watching this absurdity unfold ... it's also pretty jarring and surreal.